GB612244A - Improvements relating to time base circuits for cathode ray tubes - Google Patents

Improvements relating to time base circuits for cathode ray tubes

Info

Publication number
GB612244A
GB612244A GB15370/46A GB1537046A GB612244A GB 612244 A GB612244 A GB 612244A GB 15370/46 A GB15370/46 A GB 15370/46A GB 1537046 A GB1537046 A GB 1537046A GB 612244 A GB612244 A GB 612244A
Authority
GB
United Kingdom
Prior art keywords
valve
conducting
circuit
cathode
time
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB15370/46A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Metropolitan Vickers Electrical Co Ltd
Original Assignee
Metropolitan Vickers Electrical Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Metropolitan Vickers Electrical Co Ltd filed Critical Metropolitan Vickers Electrical Co Ltd
Priority to GB15370/46A priority Critical patent/GB612244A/en
Priority to US5357A priority patent/US2557770A/en
Publication of GB612244A publication Critical patent/GB612244A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K4/00—Generating pulses having essentially a finite slope or stepped portions
    • H03K4/06—Generating pulses having essentially a finite slope or stepped portions having triangular shape
    • H03K4/08—Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape
    • H03K4/10—Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape using as active elements vacuum tubes only

Abstract

612,244. Saw-tooth generating circuits. SCOLES, G. J., and METROPOLITANVICKERS ELECTRICAL CO., Ltd. May 21, 1946, No. 15370. [Class 40 (vi)] In a time-base circuit particularly for scanning a cathode-ray tube, in which a valve is rendered conducting by a trigger circuit, when the voltage developed across a resistor in the cathode circuit of the valve reaches a predetermined amplitude, a voltage is applied to the trigger circuit via a rectifier to render the valve non-conducting. The Figure shows a time base valve V3 and a trigger circuit comprising cathode-coupled flip-flop valves V1, V2, valves V1, V3 and V4 normally being non- conducting' and valve V2 conducting. When a negative pulse is applied at S, normal multivibrator action occurs, V2 being cut-off and V1 rendered conducting, thus initiating the timebase sweep by way of known circuits indicated at A. The current through resistor R4 increases until V4 conducts, the potential at P then increases and reduces the current through VI, thus causing the multivibrator circuit to return to its original state, cutting off the time-base valve V3.
GB15370/46A 1946-05-21 1946-05-21 Improvements relating to time base circuits for cathode ray tubes Expired GB612244A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB15370/46A GB612244A (en) 1946-05-21 1946-05-21 Improvements relating to time base circuits for cathode ray tubes
US5357A US2557770A (en) 1946-05-21 1948-01-30 Time base circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB15370/46A GB612244A (en) 1946-05-21 1946-05-21 Improvements relating to time base circuits for cathode ray tubes

Publications (1)

Publication Number Publication Date
GB612244A true GB612244A (en) 1948-11-10

Family

ID=10057972

Family Applications (1)

Application Number Title Priority Date Filing Date
GB15370/46A Expired GB612244A (en) 1946-05-21 1946-05-21 Improvements relating to time base circuits for cathode ray tubes

Country Status (2)

Country Link
US (1) US2557770A (en)
GB (1) GB612244A (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2857512A (en) * 1953-03-20 1958-10-21 Rca Corp Monostable multivibrator
US2917625A (en) * 1954-03-12 1959-12-15 Bell Telephone Labor Inc Toggle circuit
US2871350A (en) * 1954-07-29 1959-01-27 Du Mont Allen B Lab Inc Delay sweep circuit
US2849609A (en) * 1954-08-19 1958-08-26 Du Mont Allen B Lab Inc Sweep circuit having an adjustable expanded section
US2853609A (en) * 1955-02-21 1958-09-23 Tektronix Inc Multivibrator hold off circuit
US3061788A (en) * 1955-02-21 1962-10-30 Tektronix Inc Multivibrator hold-off circuit
US2898557A (en) * 1956-08-08 1959-08-04 North American Aviation Inc Transistorized voltage controlled oscillator

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR848178A (en) * 1937-12-30 1939-10-24 Fernseh Ag Method and device for synchronizing television broadcasts
US2405237A (en) * 1941-10-04 1946-08-06 Arthur J Ruhlig Electronic trigger circuit with time-delay
US2414486A (en) * 1943-11-30 1947-01-21 Bell Telephone Labor Inc Sweep control circuits
US2448069A (en) * 1944-08-30 1948-08-31 Philco Corp Saw-tooth generator with automatic amplitude control
US2448070A (en) * 1944-08-30 1948-08-31 Philco Corp Saw-tooth generator with automatic amplitude control

Also Published As

Publication number Publication date
US2557770A (en) 1951-06-19

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